<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    *{padding: 0px;margin: 0px;}
    .warp{
      height: 400px;
      width: 100%;
      border: 1px black solid;
      display: table;
      /* line-height: 400px;
      text-align: center; */
    }
    .content{
      display: table-cell;
      text-align: center;
      vertical-align: middle;
    }
  </style>
</head>
<body>
  <div class="warp">
    <div class="content"><p>Welcome to Website</p><p>Welcome to Website</p><p>Welcome to Website</p></div>
  </div>
</body>
</html>